/**
  * @dataProvider provider
  */
 public function testNegativePronunciations($input, $expected)
 {
     $number = new IntegerNumber($input, IntegerNumber::BASE_HEX);
     $number->setIsPositive(false);
     $pronouncer = new HexPronouncer();
     $pronunciation = $pronouncer->pronounce($number);
     $this->assertEquals("negative " . $expected, $pronunciation);
 }